Draft-equalizer



(No Model.)

J. W. GAMBLE. DRAFT EQUALIZER.

No. 445,638. Patented Feb. 3, 189.1,

W @his @www 'in the county of Adair UNrTnn STATES JOSEPH V. GAMBLE, -OF ADAIR, IOVA.

DRAFTnEQUALIZER.

SPECIFICATION forming part of Letters Patent No. 445,638, dated February 3, 1891. Application filed November 1l 1890. Serial No. 370,017. (No model.)

To @ZZ whom, t may concern:

Be it known that I, JOSEPH W. GAMBLE, a citizenof the United States, residing at Adair, and State of Iowa, have invented a new and useful Draft-Evencr, of which the following is a specification.

The invention has relation to improvements in draft-eveners.

The object of the present invention is to simplify and improve the construction of draft-eveners and increase theirstrength and durability.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure l is a perspective view of a draft-evener constructed in accordance with this invention. Fig. 2 is a transverse sectional view taken through the pivot of the bell-crank lever.

Referring to the accompanying' drawings, 1 designates a tongue having pivotally con nected to it one end of a bracket-bar 2, the other end of which is supported by a brace 3, and has pivoted to it a main whiftletree +L, which is pivoted beyond its center and has connected to its ends a pair of doubletrees 5 and 6, and is arranged so that its end 7 projects slightly on one side of` the tongue, whereby the doubletree 5 has one of its'singletrees S arranged on each side of the tongue, thereby bringing three horses on one side of the tongue and one on the other. The main whiftletree is connected near its outer end at a point beyond its center by a pivot 9 with the front ends of a pair of long bars 10, which have their front ends arranged on the upper and lower faces of the main whiftletree and which extend rearwardly and have their rear ends pivotally connected to the short arm 1l of a bell-crank lever 12. The bell-crank lever l2 is fulcrumed at its angle on a bracket 13 and has its long arm let connected by short bars 15 with the center of the doubletree 5, which is pivotally attached to the end 7 of the main whifiietree, and the pivot 1G which secures the doubletree 5 to the main whifietree also serves to secure the short bars 15, which are similar to the long bars lO, and have their forward ends arranged on the upper face of the doubletree and the lower face of the main whiftletree. It. will thus be seen that the long arm of the main whii'iietree is connected with the short arm of the bell crank lever, and the short arm of the main whit'iietree is connected with the long arm of the bell-crank lever, thereby equalizing the draft. I

The'brace 3 is pivoted to the tongue and to the bracket-bar, and the end 7 of the main whi'fiietree is arranged in a keeper 17, which has its ends secured to the sides of the tongue and is arranged between the main whiftletree and the doubletree 5 and separates the same. The bracket 13 upon which the bell-crank lever is fulerunied is angular, and has its arms 1S secured tothe upper face of the tongue and bent, as at 19, to elevate the outer portion of the bracket above the plane of the tongue, and the angle of the bracket projecting toward the grain about one inch, or as far as the case may require, is provided with a vertical iiange 20,having at its ends shoulders 2l, and the long arm of the bell-crank lever is arranged between the shoulders 21 and is limited in its movement by them. The pivot 22, which fulcrurns the bell-crank lever to the bracket, has its upper end supported by a brace-rod 23, the other end of which is secured to the bracket, and the said bracerod prevents the pivot being torn from the bracket should great force be exerted upon the device.V The outer portion of the bracket is supported bya stationary brace 24C, having one end secured to the tongue and the other end secured to the lower face of the bracket by the pivot 22. ,y

It will readilybe seen that the d 'aft-evener is simple and inexpensive in construction and is capable of standing great strain wit-hout injury to its parts. i

What I claim is 1. In the improved draft-evener, the com bination of the tongue, the angle-bracket secured to the tongue and having its outer porn tion provided with a verticaliiange and having the shoulders arranged at the ends of the iiange, the bell-crank lever having its long arm arranged between the said shoulders, the brace-rod 23, secured to the bracket and connected with the pivot of the bell-crank lever and supporting the same, the bracket- IOO bar, the main whi'fetree pivoted lo the bracket-bar and connected with the bellcrank lever and having whiilietrees at its ends, substantially as described.

2. In the improved draft-evener, the combination of the tongue, the angle bracketI having its arms bent ab 19 and secured to the tongue and provided at its outer end with the shoulders 2l,the stationarybraee 24, secured to the tongue and the outer end of lche bracket, the bell-crank leverfulerumed on the bracket and having its long arm arranged between the said shoulders 21, the braeketbar, the main whi'letree pivoted to lche bracket-bar at a point beyond its center and having its long arm connected with the short arm of tbe bellerank lever and itsshort arnl eonneeied with the long arm of the bell-crank lever, the keeper secured tothe tongue and iuolosing Jolie main whietree, the doubletree 6, secured to the outer end of the main Whffletree,

and the doubletree 5, secured to the inner end n 

